calculate the theoretical reciprocal linear dispersion of an echelle grating with a focal growth of 0.85m, a groove density of 120 grooves/mm, and a diffracion angle of 61 16 when the diffraction order is 30 and 90
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calculate the theoretical reciprocal linear dispersion of an echelle grating with a focal growth of 0.85m, a groove density of 120 grooves/mm, and a diffracion angle of 61 16 when the diffraction order is 30 and 90
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- Find out the atomic form factor of the C in diamond (400) diffraction peak using Cu Kα1 radiation! How about the atomic form factor of the (400) diffraction peak for Ge crystal using Cu Kα1 radiation! Needs Complete typed solution with 100 % accuracy.Iron nanoparticles were produced by the evaporation method and their average sizes are estimated 25,50, 90 and 120 nm using the laser particle analyzer. Assuming that the resultant particles are strain freeand the peak broadening detected in the measurement with Cu-K radiation (λ=0.154 nm) arises onlyfrom variation of size of the crystallites, estimate the peak width (the value of FWHM) of the (110) plane.Explain how XPS can be used to identify the compositions of the material in the layers below the surface. and state if is it possible to perform depth profile analysis using an X-ray tube such as Cu tube?
- You are given the following data : Peak order (n) Diffraction Angle (2q) 1 38.6 2 55.7 3 70.0 Determine whether sample is fcc or bcc or neither. Give reason for your choice.I) Diamond crystallises in a face-centred cubic structure with a = 3.5625 Å. Calculate the d-spacing and peak position of the first allowed peak (i.e. the peak with the lowest hkl value that meets the selection rules) using a wavelength of 0.71073 Å. II) A solvothermal synthesis gave rise to a mixture of two crystalline phases: one phase consists of 50-65 μm octahedral crystallites while the other phase consists of 150-180 μm hexagonal plates. Identify a separation technique that would likely be effective in separating these materials.Calculate the concentration of a colored solution if the molar absorptivity is 39.80 M-1•cm-1 and the absorbance is 0.777. The path length of the sample is 1.00 cm.
- 1. A compound has a molar absorptivity of 3.031 x 10° L cm1 mol1. If a 15.00 mm-length cell is used to hold the sample, and a transmittance of 19.53 % is measured, what is the molarity of the compound in solution?In an x-ray diffraction measurement of BCC Nb, the observed angle (2Θ) for the (211) set of planes occurs at 75.90 degrees (1st order) and a monochromatic x-ray source at λ = 0.1659 nm is used. Compute:a) the interplanar spacing of the (211) set of planes,b) the atomic radius of Nb,c) the anticipated 1st order observed angle (2Θ) for the (111) lattice planes in Nb.d) Estimate the relative intensities observed for the (211) and the (111) diffraction peaks in Nb. Describe your reasoning.10. Determine the interplanar spacings for the following compound: (use λ = 1.54 Å and n=1, calculate spacing for each peak) Intensity (relative) 40 50 60 70 Diffraction angle 20 80 t 90 FIGURE 3.25 Diffraction pattern for polycrystalline copper.
- 13White light is directed to a reflection grating at an incident angle of 45 degrees. How many grooves per mm should the grating have to diffract first order 666 nm light at an angle of -10 degrees. Round your answer to the nearest 1 groove/mm.Which of the following is NOT a detector used with HPLC? evaporative light-scattering detector refractive index detector ultraviolet detector electrochemical detector thermal conductivity detector
